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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F302R8/pwmout_api.c@135:067cc8ba23da, 2014-03-25 (annotated)

Committer:
mbed_official
Date:
Tue Mar 25 10:15:07 2014 +0000
Revision:
135:067cc8ba23da
Parent:
125:23cc3068a9e4
Child:
162:937d965048d3
Synchronized with git revision 11bc6fdd038cd58284639ec6ff158b57e4b4bf68



Full URL: https://github.com/mbedmicro/mbed/commit/11bc6fdd038cd58284639ec6ff158b57e4b4bf68/



[NUCLEO_F302R8] Improvements in clock configuration, spi default pins, code formatting

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 125:23cc3068a9e4 1 /* mbed Microcontroller Library
mbed_official 125:23cc3068a9e4 2 *******************************************************************************
mbed_official 125:23cc3068a9e4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 125:23cc3068a9e4 4 * All rights reserved.
mbed_official 125:23cc3068a9e4 5 *
mbed_official 125:23cc3068a9e4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 125:23cc3068a9e4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 125:23cc3068a9e4 8 *
mbed_official 125:23cc3068a9e4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 125:23cc3068a9e4 10 * this list of conditions and the following disclaimer.
mbed_official 125:23cc3068a9e4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 125:23cc3068a9e4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 125:23cc3068a9e4 13 * and/or other materials provided with the distribution.
mbed_official 125:23cc3068a9e4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 125:23cc3068a9e4 15 * may be used to endorse or promote products derived from this software
mbed_official 125:23cc3068a9e4 16 * without specific prior written permission.
mbed_official 125:23cc3068a9e4 17 *
mbed_official 125:23cc3068a9e4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 125:23cc3068a9e4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 125:23cc3068a9e4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 125:23cc3068a9e4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 125:23cc3068a9e4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 125:23cc3068a9e4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 125:23cc3068a9e4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 125:23cc3068a9e4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 125:23cc3068a9e4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 125:23cc3068a9e4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 125:23cc3068a9e4 28 *******************************************************************************
mbed_official 125:23cc3068a9e4 29 */
mbed_official 125:23cc3068a9e4 30 #include "pwmout_api.h"
mbed_official 125:23cc3068a9e4 31
mbed_official 125:23cc3068a9e4 32 #include "cmsis.h"
mbed_official 125:23cc3068a9e4 33 #include "pinmap.h"
mbed_official 125:23cc3068a9e4 34 #include "error.h"
mbed_official 125:23cc3068a9e4 35
mbed_official 125:23cc3068a9e4 36 // TIM2 cannot be used because already used by the us_ticker
mbed_official 125:23cc3068a9e4 37 static const PinMap PinMap_PWM[] = {
mbed_official 135:067cc8ba23da 38 // {PA_0, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 135:067cc8ba23da 39 // {PA_1, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH2
mbed_official 125:23cc3068a9e4 40 {PA_1, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH1N
mbed_official 125:23cc3068a9e4 41 {PA_2, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH1
mbed_official 125:23cc3068a9e4 42 {PA_3, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH2
mbed_official 135:067cc8ba23da 43 // {PA_5, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 125:23cc3068a9e4 44 {PA_6, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 125:23cc3068a9e4 45 {PA_7, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1
mbed_official 135:067cc8ba23da 46 // {PA_7, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 125:23cc3068a9e4 47 {PA_8, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1
mbed_official 125:23cc3068a9e4 48 {PA_9, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2
mbed_official 135:067cc8ba23da 49 // {PA_9, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM2_CH3
mbed_official 125:23cc3068a9e4 50 {PA_10, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3
mbed_official 135:067cc8ba23da 51 // {PA_10, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM2_CH4
mbed_official 125:23cc3068a9e4 52 {PA_11, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_11)}, // TIM1_CH4
mbed_official 135:067cc8ba23da 53 // {PA_11, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 125:23cc3068a9e4 54 {PA_12, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 135:067cc8ba23da 55 // {PA_12, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 125:23cc3068a9e4 56 {PA_13, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1N
mbed_official 135:067cc8ba23da 57 // {PA_15, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 135:067cc8ba23da 58
mbed_official 125:23cc3068a9e4 59 {PB_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 125:23cc3068a9e4 60 {PB_1, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3N
mbed_official 135:067cc8ba23da 61 // {PB_3, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH2
mbed_official 125:23cc3068a9e4 62 {PB_4, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 125:23cc3068a9e4 63 {PB_5, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM17_CH1
mbed_official 125:23cc3068a9e4 64 {PB_6, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1N
mbed_official 125:23cc3068a9e4 65 {PB_7, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1N
mbed_official 125:23cc3068a9e4 66 {PB_8, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 125:23cc3068a9e4 67 {PB_9, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1
mbed_official 135:067cc8ba23da 68 // {PB_10, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH3
mbed_official 135:067cc8ba23da 69 // {PB_11, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH4
mbed_official 125:23cc3068a9e4 70 {PB_13, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 125:23cc3068a9e4 71 {PB_14, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM15_CH1
mbed_official 135:067cc8ba23da 72 // {PB_14, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 125:23cc3068a9e4 73 {PB_15, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM15_CH2
mbed_official 135:067cc8ba23da 74 // {PB_15, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM15_CH1N
mbed_official 135:067cc8ba23da 75 // {PB_15, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_4)}, // TIM1_CH3N
mbed_official 135:067cc8ba23da 76
mbed_official 125:23cc3068a9e4 77 {PC_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH1
mbed_official 125:23cc3068a9e4 78 {PC_1, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH2
mbed_official 125:23cc3068a9e4 79 {PC_2, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH3
mbed_official 125:23cc3068a9e4 80 {PC_3, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH4
mbed_official 125:23cc3068a9e4 81 {PC_13, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_4)}, // TIM1_CH1N
mbed_official 135:067cc8ba23da 82
mbed_official 125:23cc3068a9e4 83 {PF_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3N
mbed_official 135:067cc8ba23da 84
mbed_official 125:23cc3068a9e4 85 {NC, NC, 0}
mbed_official 125:23cc3068a9e4 86 };
mbed_official 125:23cc3068a9e4 87
mbed_official 135:067cc8ba23da 88 void pwmout_init(pwmout_t* obj, PinName pin) {
mbed_official 125:23cc3068a9e4 89 // Get the peripheral name from the pin and assign it to the object
mbed_official 125:23cc3068a9e4 90 obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
mbed_official 135:067cc8ba23da 91
mbed_official 125:23cc3068a9e4 92 if (obj->pwm == (PWMName)NC) {
mbed_official 125:23cc3068a9e4 93 error("PWM pinout mapping failed");
mbed_official 125:23cc3068a9e4 94 }
mbed_official 135:067cc8ba23da 95
mbed_official 125:23cc3068a9e4 96 // Enable TIM clock
mbed_official 125:23cc3068a9e4 97 if (obj->pwm == PWM_1) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
mbed_official 125:23cc3068a9e4 98 if (obj->pwm == PWM_15) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM15, ENABLE);
mbed_official 125:23cc3068a9e4 99 if (obj->pwm == PWM_16) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM16, ENABLE);
mbed_official 125:23cc3068a9e4 100 if (obj->pwm == PWM_17) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM17, ENABLE);
mbed_official 135:067cc8ba23da 101
mbed_official 125:23cc3068a9e4 102 // Configure GPIO
mbed_official 125:23cc3068a9e4 103 pinmap_pinout(pin, PinMap_PWM);
mbed_official 135:067cc8ba23da 104
mbed_official 125:23cc3068a9e4 105 obj->pin = pin;
mbed_official 125:23cc3068a9e4 106 obj->period = 0;
mbed_official 125:23cc3068a9e4 107 obj->pulse = 0;
mbed_official 135:067cc8ba23da 108
mbed_official 125:23cc3068a9e4 109 pwmout_period_us(obj, 20000); // 20 ms per default
mbed_official 125:23cc3068a9e4 110 }
mbed_official 125:23cc3068a9e4 111
mbed_official 125:23cc3068a9e4 112 void pwmout_free(pwmout_t* obj) {
mbed_official 125:23cc3068a9e4 113 TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
mbed_official 125:23cc3068a9e4 114 TIM_DeInit(tim);
mbed_official 125:23cc3068a9e4 115 }
mbed_official 125:23cc3068a9e4 116
mbed_official 125:23cc3068a9e4 117 void pwmout_write(pwmout_t* obj, float value) {
mbed_official 125:23cc3068a9e4 118 TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
mbed_official 125:23cc3068a9e4 119 TIM_OCInitTypeDef TIM_OCInitStructure;
mbed_official 135:067cc8ba23da 120
mbed_official 125:23cc3068a9e4 121 if (value < (float)0.0) {
mbed_official 125:23cc3068a9e4 122 value = (float)0.0;
mbed_official 125:23cc3068a9e4 123 } else if (value > (float)1.0) {
mbed_official 125:23cc3068a9e4 124 value = (float)1.0;
mbed_official 125:23cc3068a9e4 125 }
mbed_official 135:067cc8ba23da 126
mbed_official 125:23cc3068a9e4 127 obj->pulse = (uint32_t)((float)obj->period * value);
mbed_official 125:23cc3068a9e4 128
mbed_official 135:067cc8ba23da 129 // Configure channels
mbed_official 125:23cc3068a9e4 130 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
mbed_official 125:23cc3068a9e4 131 TIM_OCInitStructure.TIM_Pulse = obj->pulse;
mbed_official 125:23cc3068a9e4 132 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
mbed_official 125:23cc3068a9e4 133 TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCPolarity_High;
mbed_official 125:23cc3068a9e4 134 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
mbed_official 125:23cc3068a9e4 135 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
mbed_official 135:067cc8ba23da 136
mbed_official 125:23cc3068a9e4 137 switch (obj->pin) {
mbed_official 125:23cc3068a9e4 138 // Channels 1
mbed_official 135:067cc8ba23da 139 // case PA_0:
mbed_official 125:23cc3068a9e4 140 case PA_2:
mbed_official 135:067cc8ba23da 141 // case PA_5:
mbed_official 125:23cc3068a9e4 142 case PA_6:
mbed_official 125:23cc3068a9e4 143 case PA_7:
mbed_official 125:23cc3068a9e4 144 case PA_8:
mbed_official 125:23cc3068a9e4 145 case PA_12:
mbed_official 135:067cc8ba23da 146 // case PA_15:
mbed_official 125:23cc3068a9e4 147 case PB_4:
mbed_official 125:23cc3068a9e4 148 case PB_5:
mbed_official 125:23cc3068a9e4 149 case PB_8:
mbed_official 125:23cc3068a9e4 150 case PB_9:
mbed_official 125:23cc3068a9e4 151 case PB_14:
mbed_official 125:23cc3068a9e4 152 case PC_0:
mbed_official 125:23cc3068a9e4 153 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 125:23cc3068a9e4 154 TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 155 TIM_OC1Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 156 break;
mbed_official 125:23cc3068a9e4 157 // Channels 1N
mbed_official 125:23cc3068a9e4 158 case PA_1:
mbed_official 135:067cc8ba23da 159 // case PA_7:
mbed_official 135:067cc8ba23da 160 // case PA_11:
mbed_official 125:23cc3068a9e4 161 case PA_13:
mbed_official 125:23cc3068a9e4 162 case PB_6:
mbed_official 125:23cc3068a9e4 163 case PB_7:
mbed_official 125:23cc3068a9e4 164 case PB_13:
mbed_official 135:067cc8ba23da 165 // case PB_15:
mbed_official 125:23cc3068a9e4 166 case PC_13:
mbed_official 125:23cc3068a9e4 167 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 125:23cc3068a9e4 168 TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 169 TIM_OC1Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 170 break;
mbed_official 125:23cc3068a9e4 171 // Channels 2
mbed_official 135:067cc8ba23da 172 // case PA_1:
mbed_official 125:23cc3068a9e4 173 case PA_3:
mbed_official 125:23cc3068a9e4 174 case PA_9:
mbed_official 135:067cc8ba23da 175 // case PB_3:
mbed_official 125:23cc3068a9e4 176 case PB_15:
mbed_official 125:23cc3068a9e4 177 case PC_1:
mbed_official 125:23cc3068a9e4 178 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 125:23cc3068a9e4 179 TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 180 TIM_OC2Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 181 break;
mbed_official 125:23cc3068a9e4 182 // Channels 2N
mbed_official 135:067cc8ba23da 183 // case PA_12:
mbed_official 125:23cc3068a9e4 184 case PB_0:
mbed_official 135:067cc8ba23da 185 // case PB_14:
mbed_official 125:23cc3068a9e4 186 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 125:23cc3068a9e4 187 TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 188 TIM_OC2Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 189 break;
mbed_official 125:23cc3068a9e4 190 // Channels 3
mbed_official 135:067cc8ba23da 191 // case PA_9:
mbed_official 125:23cc3068a9e4 192 case PA_10:
mbed_official 135:067cc8ba23da 193 // case PB_10:
mbed_official 125:23cc3068a9e4 194 case PC_2:
mbed_official 125:23cc3068a9e4 195 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 125:23cc3068a9e4 196 TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 197 TIM_OC3Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 198 break;
mbed_official 125:23cc3068a9e4 199 // Channels 3N
mbed_official 125:23cc3068a9e4 200 case PB_1:
mbed_official 125:23cc3068a9e4 201 case PF_0:
mbed_official 135:067cc8ba23da 202 // case PB_15:
mbed_official 125:23cc3068a9e4 203 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 125:23cc3068a9e4 204 TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 205 TIM_OC3Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 206 break;
mbed_official 125:23cc3068a9e4 207 // Channels 4
mbed_official 135:067cc8ba23da 208 // case PA_10:
mbed_official 125:23cc3068a9e4 209 case PA_11:
mbed_official 135:067cc8ba23da 210 // case PB_11:
mbed_official 125:23cc3068a9e4 211 case PC_3:
mbed_official 125:23cc3068a9e4 212 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 125:23cc3068a9e4 213 TIM_OC4PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 214 TIM_OC4Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 215 break;
mbed_official 125:23cc3068a9e4 216 default:
mbed_official 125:23cc3068a9e4 217 return;
mbed_official 135:067cc8ba23da 218 }
mbed_official 125:23cc3068a9e4 219 }
mbed_official 125:23cc3068a9e4 220
mbed_official 125:23cc3068a9e4 221 float pwmout_read(pwmout_t* obj) {
mbed_official 125:23cc3068a9e4 222 float value = 0;
mbed_official 125:23cc3068a9e4 223 if (obj->period > 0) {
mbed_official 125:23cc3068a9e4 224 value = (float)(obj->pulse) / (float)(obj->period);
mbed_official 125:23cc3068a9e4 225 }
mbed_official 125:23cc3068a9e4 226 return ((value > (float)1.0) ? ((float)1.0) : (value));
mbed_official 125:23cc3068a9e4 227 }
mbed_official 125:23cc3068a9e4 228
mbed_official 125:23cc3068a9e4 229 void pwmout_period(pwmout_t* obj, float seconds) {
mbed_official 125:23cc3068a9e4 230 pwmout_period_us(obj, seconds * 1000000.0f);
mbed_official 125:23cc3068a9e4 231 }
mbed_official 125:23cc3068a9e4 232
mbed_official 125:23cc3068a9e4 233 void pwmout_period_ms(pwmout_t* obj, int ms) {
mbed_official 125:23cc3068a9e4 234 pwmout_period_us(obj, ms * 1000);
mbed_official 125:23cc3068a9e4 235 }
mbed_official 125:23cc3068a9e4 236
mbed_official 125:23cc3068a9e4 237 void pwmout_period_us(pwmout_t* obj, int us) {
mbed_official 125:23cc3068a9e4 238 TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
mbed_official 125:23cc3068a9e4 239 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
mbed_official 125:23cc3068a9e4 240 float dc = pwmout_read(obj);
mbed_official 125:23cc3068a9e4 241
mbed_official 135:067cc8ba23da 242 TIM_Cmd(tim, DISABLE);
mbed_official 135:067cc8ba23da 243
mbed_official 125:23cc3068a9e4 244 obj->period = us;
mbed_official 135:067cc8ba23da 245
mbed_official 125:23cc3068a9e4 246 TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
mbed_official 125:23cc3068a9e4 247 TIM_TimeBaseStructure.TIM_Period = obj->period - 1;
mbed_official 125:23cc3068a9e4 248 TIM_TimeBaseStructure.TIM_Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
mbed_official 125:23cc3068a9e4 249 TIM_TimeBaseStructure.TIM_ClockDivision = 0;
mbed_official 125:23cc3068a9e4 250 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
mbed_official 125:23cc3068a9e4 251 TIM_TimeBaseInit(tim, &TIM_TimeBaseStructure);
mbed_official 125:23cc3068a9e4 252
mbed_official 125:23cc3068a9e4 253 // Set duty cycle again
mbed_official 125:23cc3068a9e4 254 pwmout_write(obj, dc);
mbed_official 135:067cc8ba23da 255
mbed_official 125:23cc3068a9e4 256 TIM_ARRPreloadConfig(tim, ENABLE);
mbed_official 135:067cc8ba23da 257
mbed_official 125:23cc3068a9e4 258 // Warning: Main Output must be enabled on TIM1, TIM8, TIM5, TIM6 and TIM17
mbed_official 125:23cc3068a9e4 259 if ((obj->pwm == PWM_1) || (obj->pwm == PWM_15) || (obj->pwm == PWM_16) || (obj->pwm == PWM_17)) {
mbed_official 125:23cc3068a9e4 260 TIM_CtrlPWMOutputs(tim, ENABLE);
mbed_official 125:23cc3068a9e4 261 }
mbed_official 135:067cc8ba23da 262
mbed_official 125:23cc3068a9e4 263 TIM_Cmd(tim, ENABLE);
mbed_official 125:23cc3068a9e4 264 }
mbed_official 125:23cc3068a9e4 265
mbed_official 125:23cc3068a9e4 266 void pwmout_pulsewidth(pwmout_t* obj, float seconds) {
mbed_official 125:23cc3068a9e4 267 pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
mbed_official 125:23cc3068a9e4 268 }
mbed_official 125:23cc3068a9e4 269
mbed_official 125:23cc3068a9e4 270 void pwmout_pulsewidth_ms(pwmout_t* obj, int ms) {
mbed_official 125:23cc3068a9e4 271 pwmout_pulsewidth_us(obj, ms * 1000);
mbed_official 125:23cc3068a9e4 272 }
mbed_official 125:23cc3068a9e4 273
mbed_official 125:23cc3068a9e4 274 void pwmout_pulsewidth_us(pwmout_t* obj, int us) {
mbed_official 125:23cc3068a9e4 275 float value = (float)us / (float)obj->period;
mbed_official 125:23cc3068a9e4 276 pwmout_write(obj, value);
mbed_official 125:23cc3068a9e4 277 }